package com.xiaolun.netty.dubborpc.netty;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;

public class NettyServer {
	public static void startServer(String hostName, int port) {
		startServer0(hostName, port);
	}

	//编写一个方法，完成对NettyServer的初始化和启动
	private static void startServer0(String hostname, int port) {
		EventLoopGroup bossGroup = new NioEventLoopGroup(1);
		EventLoopGroup workerGroup = new NioEventLoopGroup();
		try {
			ServerBootstrap serverBootstrap = new ServerBootstrap();
			serverBootstrap.group(bossGroup, workerGroup)
					.channel(NioServerSocketChannel.class)
					.childHandler(new ChannelInitializer<SocketChannel>() {
									  @Override
									  protected void initChannel(SocketChannel ch) throws Exception {
										  ChannelPipeline pipeline = ch.pipeline();
										  pipeline.addLast(new StringDecoder());
										  pipeline.addLast(new StringEncoder());
										  pipeline.addLast(new NettyServerHandler()); //业务处理器
									  }
								  }
					);
			ChannelFuture channelFuture = serverBootstrap.bind(hostname, port).sync();
			System.out.println("服务提供方开始提供服务~~");
			channelFuture.channel().closeFuture().sync();
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			bossGroup.shutdownGracefully();
			workerGroup.shutdownGracefully();
		}
	}
}
